PIC32MX150F128B-50I/SO - 50MHz 32-bit MCU, 128KB Flash | Microchip
料号： PIC32MX150F128B-50I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.96 | $4.96 |
| 10 | $4.47 | $44.70 |
| 100 | $3.97 | $397.00 |
| 500 | $3.58 | $1,790.00 |
| 1,000 | $3.18 | $3,180.00 |
PIC32MX150F128B-50I/SO 概述
A 32-bit microcontroller (MCU) is a microprocessor-based system-on-chip that integrates a CPU core, program memory (Flash), data memory (SRAM), and a wide set of on-chip peripherals such as timers, communication controllers, and analog blocks. Microcontrollers sit at the top of the embedded-computing hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The PIC32MX1XX/2XX family specifically addresses cost-sensitive 32-bit designs where an 8-bit PIC or 16-bit dsPIC is under-powered but a Cortex-M4 class device is over-spec or over-priced.
Key features include the Peripheral Pin Select (PPS) remapping engine for flexible signal routing, two I2S/SPI modules for codec and serial audio, a Parallel Master Port (PMP) for graphics and external memory, and a Charge Time Measurement Unit (CTMU) that supports mTouch capacitive touch buttons plus 1 ns high-resolution time measurement. The on-chip 10-bit ADC and internal temperature sensor round out the analog toolset. According to the Microchip PIC32MX1XX/2XX datasheet, the device operates from 2.3 V to 3.6 V with dedicated 5V-tolerant digital I/O pins for mixed-voltage designs.
Architecturally the PIC32MX150 uses a single-cycle MIPS32 M4K integer pipeline with hardware multiply/divide, a 5-stage prefetch cache, and an integrated 8 MHz internal FRC oscillator with PLL. Peripheral Pin Select (PPS) decouples digital peripheral functions from physical pin assignments, allowing designers to remap UART, SPI, and timer I/O on the fly and simplify PCB routing. The CTMU block provides constant-current sources for precise time-of-flight measurement, enabling both capacitive touch sensing and high-resolution pulse timing without external timing circuits.
Typical applications include USB audio peripherals, low-cost graphics HMI with PMP-driven LCDs, industrial control panels with mTouch buttons, sensor hubs, and consumer devices requiring 32-bit performance with USB device connectivity. The wide-body 28-SOIC footprint eases hand-prototyping and two-layer PCB assembly.
When designing with this part, allocate the USB DP/DPU pins carefully because they are not 5V-tolerant; add a proper ESD/EMI network and series resistor on D+/D-. The wide-body SOIC package has noticeably higher thermal resistance than QFN equivalents, so for high-pin-count 50-MHz workloads consider PIC32MX150F128B-I/ML variants if the PCB permits the QFN footprint.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC32MX150F128B-50I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX150F128B-50I/SO （相同外形与封装尺寸） ——差异在于 Package, Operating Voltage, ADC, Core Architecture, DMIPS Performance.
快速对比工具——选择替代料号进行并排对比：
PIC32MX150F128B-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX250F128B-50I/SO
✅ 直接替换✓ 有现货
$3.55 / 个
查看数据手册 →PIC32MX170F256B-50I/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX130F128B-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX230F256B-50I/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX150F128B-50I/SO 最大额定值与电气特性
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 28-pin SOIC (SO), wide-body 300 mil |
| USB | USB 2.0 Full-Speed Device |
| SPI/I2S Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 2 |
| PMP (Parallel Master Port) | Yes |
| CTMU (Capacitive Touch / Timing) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 |
PIC32MX150F128B-50I/SO 引脚配置
| 引脚 1 | MCLR — Master clear (reset) input; drive low to reset the device |
| 引脚 2 | RA0 — General-purpose I/O / analog input / PPS remappable |
| 引脚 3 | RA1 — General-purpose I/O / analog input / PPS remappable |
| 引脚 4 | RB0 — General-purpose I/O / PGED1 programming data |
| 引脚 5 | RB1 — General-purpose I/O / PGEC1 programming clock |
| 引脚 6 | RB2 — General-purpose I/O / analog input |
| 引脚 7 | RB3 — General-purpose I/O / analog input |
| 引脚 8 | RB4 — General-purpose I/O |
| 引脚 9 | RB5 — General-purpose I/O |
| 引脚 10 | RB6 — General-purpose I/O |
| 引脚 11 | VDD — Positive supply voltage (2.3 V to 3.6 V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | RB7 — General-purpose I/O |
| 引脚 14 | RB8 — General-purpose I/O |
| 引脚 15 | RB9 — General-purpose I/O / USB D+ |
| 引脚 16 | RB10 — General-purpose I/O / USB D- |
| 引脚 17 | RB11 — General-purpose I/O |
| 引脚 18 | RB12 — General-purpose I/O |
| 引脚 19 | RB13 — General-purpose I/O |
| 引脚 20 | RB14 — General-purpose I/O |
| 引脚 21 | RB15 — General-purpose I/O |
| 引脚 22 | RC0 — General-purpose I/O |
| 引脚 23 | RC1 — General-purpose I/O |
| 引脚 24 | RC2 — General-purpose I/O |
| 引脚 25 | RC3 — General-purpose I/O |
| 引脚 26 | RC4 — General-purpose I/O |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply voltage (2.3 V to 3.6 V) |
典型应用
PIC32MX150F128B-50I/SO 适用于 6 应用s: USB Audio Peripherals (Speakers, Headsets, DACs), Graphics HMI with PMP-Driven LCDs, mTouch Capacitive Touch Panels, Industrial Sensor Hubs and Modbus Gateways, USB HID and Consumer Devices, Low-Cost Data Loggers with USB Streaming.
USB Audio Peripherals (Speakers, Headsets, DACs)
The PIC32MX150F128B-50I/SO is a strong fit for USB audio class 1.0 peripherals because it pairs an integrated Full-Speed USB 2.0 device controller with two I2S/SSP modules operating at audio sample rates. At 50 MHz the MIPS32 M4K core drives a USB isochronous endpoint at 48 kHz / 24-bit with sub-millisecond ISR latency, while the 32 KB SRAM holds ping-pong audio buffers without overrun. The 2.3-3.6 V supply rails cleanly off USB VBUS through an LDO, avoiding level shifters. This combination delivers USB headphone amplifiers, USB-to-I2S DAC dongles, and field-recording microphones where cost matters and full-speed bandwidth is sufficient. Microchip's MLA USB audio firmware reduces time-to-market further.
推荐
Graphics HMI with PMP-Driven LCDs
The PIC32MX150F128B-50I/SO is well-matched to small graphical HMI panels because its Parallel Master Port (PMP) drives 8/16-bit Intel-8080-style LCD controllers directly. The 50 MHz core pumps pixel data into the framebuffer at refresh rates suitable for 128x64 to 320x240 panels, while Peripheral Pin Select (PPS) lets designers route control signals onto convenient GPIO pins for clean 2-layer PCB routing. CTMU simplifies menu navigation via mTouch buttons alongside the LCD. Designers get a single-chip 32-bit HMI solution with 128 KB Flash for GUI assets and 32 KB SRAM for framebuffer compression, all in a hand-solderable wide-body SOIC.
推荐
mTouch Capacitive Touch Panels
The PIC32MX150F128B-50I/SO's on-chip Charge Time Measurement Unit (CTMU) is purpose-built for Microchip's mTouch capacitive touch library, supporting both self-capacitance buttons and mutual-capacitance sliders with sub-nanosecond timing resolution. The 50 MHz MIPS core runs the touch-scan loop plus the application stack concurrently, while the 28-SOIC footprint keeps white-goods and appliance panels hand-repairable. Designers get 1-32 touch electrodes with no external timing IC, plus the 10-bit ADC for adjacent analog sensors like NTC temperature. This combination is ideal for cooktops, washing machines, and HVAC controllers that need robust touch at low BOM cost.
推荐
Industrial Sensor Hubs and Modbus Gateways
The PIC32MX150F128B-50I/SO is a strong fit for industrial sensor hubs because its 50 MHz MIPS32 core, dual UART, and USB 2.0 device deliver Modbus RTU, RS-485, and USB CDC bridging in a single chip. The 32 KB SRAM accommodates Modbus transaction buffers plus a small RTOS, while the 10-bit ADC scans 4-20 mA loops with proper input conditioning. The industrial -40C to +85C temperature range supports factory-floor deployment, and the wide-body 28-SOIC withstands hand rework during field servicing. Designers get a compact, low-power hub that bridges field sensors to upstream PLCs or HMIs.
推荐
USB HID and Consumer Devices
The PIC32MX150F128B-50I/SO is well-suited for USB HID devices such as custom keypads, programmable macro pads, presentation remotes, and game controllers. The Full-Speed USB device plus 21 GPIO plus CTMU let designers support 64+ mechanical keys or 32 touch keys plus LEDs, encoders, and audio cues simultaneously. The 128 KB Flash hosts HID report descriptor plus custom vendor reports, while 32 KB SRAM handles ring buffers for high-rate inputs. Microchip's USB HID stack provides drop-in class drivers, and the wide-body SOIC simplifies hand-prototyping for small-batch custom peripherals.
推荐
Low-Cost Data Loggers with USB Streaming
The PIC32MX150F128B-50I/SO serves as a data logger brain because its 50 MHz core samples from the 10-bit ADC up to ~1 MSPS aggregate and streams results over USB Full-Speed CDC. The 128 KB Flash stores bootloader plus configuration pages, and 32 KB SRAM buffers burst samples before flushing to the host. The 2.3-3.6 V supply rails from a USB power rail or 3 V coin cell with boost. PPS lets engineers reassign UART or SPI for an external flash or SD-card companion if storage beyond on-chip RAM is needed, making the part a versatile USB-tethered logger for field instrumentation.
推荐
推荐产品汇总
工程参考数据： PIC32MX150F128B-50I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX150F128B-I/SO | PIC32MX250F128B-50I/SO | PIC32MX170F256B-50I/SO | PIC32MX130F128B-I/SO | PIC32MX230F256B-50I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO, 300 mil) | 28-SOIC (SO, 300 mil) - same | 28-SOIC (SO, 300 mil) - same | 28-SOIC (SO, 300 mil) - same | 28-SOIC (SO, 300 mil) - same | 28-SOIC (SO, 300 mil) - same |
| Max CPU Clock | 50 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 64 KB | 32 KB | 16 KB |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Higher CPU clock with full peripheral parity （对比 PIC32MX150F128B-I/SO)
- Doubles Flash and SRAM at same speed grade （对比 PIC32MX170F256B-50I/SO)
- Drop-in 50 MHz upgrade with extra PMP enhancements （对比 PIC32MX250F128B-50I/SO)
设计说明
Power the PIC32MX150F128B-50I/SO from a clean 3.3 V LDO with at least 100 mA headroom for active USB operation. Place a 10 uF bulk cap plus 100 nF decoupling on each VDD/VSS pair within 5 mm of the pins. USB bus-powered designs must keep total suspend current below 2.5 mA per the USB 2.0 spec; configure the part's regulator and oscillator modes carefully to meet suspend.
Route USB D+ and D- as a 90-ohm differential pair with matching length within 150 mil. Place the 15 k pull-down on D- (device mode) directly at the MCU pin, and add common-mode chokes plus ESD array (e.g. USBLC6-2SC6) close to the connector. The MCLR pin needs a 10 k pull-up to VDD and a 100 nF cap to ground for clean in-circuit serial programming (ICSP).
Do not apply 5 V to non-5V-tolerant pins. The USB D+/D- lines on the PIC32MX150 are 5V-tolerant at the wire side via the analog mux but the digital inputs are clamped; never back-drive voltage onto an unpowered MCU. Also, the PPS register unlock sequence must be executed exactly as documented - forgetting the unlock write-locks the part and bricks the firmware update path until the next POR.
At 50 MHz active, the PIC32MX150F128B-50I/SO draws roughly 25 mA from a 3.3 V rail (less than 0.5 mA/MHz per datasheet), yielding about 80 mW dissipation. The 28-SOIC wide-body has theta_JA near 70 C/W, so worst-case junction rise is only ~6 C above ambient at room temperature - no heatsink required, but adequate copper pour (>= 0.25 sq inch) is recommended for reliability.
When driving PMP parallel LCD buses, add 22-33 ohm series resistors on data and control lines to dampen reflections on cables longer than 50 mm. The 50 MHz core and PMP cycle rate produce edges under 5 ns; without damping, long LCD cables can show ghosting and color fringing on TFT panels. Keep PMP traces short and ground-referenced, and place the connector adjacent to the MCU to minimize stub lengths.
合规信息
RoHS and REACH compliant per Microchip product page; conflict-minerals statement available from Microchip. Not AEC-Q100 qualified - choose PIC32MX1XX/2XX AEC-Q100 variants for automotive.
